воскресенье, 18 января 2015 г.

A.A. Farke, W.D. Maxwell, R.L. Cifelli, M.J. Wedel (2014) A Ceratopsian Dinosaur from the Lower Cretaceous of Western North America, and the Biogeography of Neoceratopsia. PLoS ONE 9(12): e112055. doi:10.1371/journal.pone.0112055